The heart of this build is a carousel with holes in (for the baskets) attached via a spindle to the motor's output shaft. The motor is attached on top of the jar lid, whilst the spindle and carousel hang down into the jar containing cleaning/rinsing fluid.

The carousel can be 3D-printed (STL file in the files area) or cut from acrylic, brass, whatever.

The jar lid needs a hole drilled in the centre large enough for the motor's output shaft, in my case 4.0mm. Place the lid over a wooden block whilst drilling to ensure a nice clean, burr-free hole.

The motor can be glued in place, but in my design I 3D-printed a small enclosure to hold it more robustly, and glued that to the lid instead. STL file in the files area.

The final, and most difficult, part is the spindle. I chose to modify a stainless-steel M5 cap-head screw:

• drill a concentric hole in the cap head, large enough to take the motor output shaft snugly, in my case 3.0mm
• cross-drill the cap head and tap in order to take two M3 grub screws. You could, alternatively, glue the spindle to the motor shaft, but it might not last long...
• cut to length, so that the carousel and baskets just clear the bottom of the jar when it's all assembled. In my case the total length of the spindle was 34mm. Larger/taller jars may be used simply by making the spindle longer.
• file a flat on the last 8mm or so of threads to fit the D-shaped hole in the carousel. Alternatively skip this step and drill out the hole to make it round.

The carousel can then be attached to the spindle using an M5 nut (and perhaps some threadlock).

See photos for the completed assembly.